A terry top mattress protector with waterproof barrier and allergy reducing fabric. Help protect your mattress from dust mites and stains. The best way to preserve your mattress warranty is with a protector to protect its physical characteristics and this mattress protector has the added benefit of being a healthy option.Machine washable Barrier against fluids to save your mattress' warranty Anti-microbial to protect against dust mites and bacteria One size fits all mattress thicknessesBed Size: Twin Weight: 1